What is mean by sensitivity of limit test?

The sensitivity of a limit test refers to the test's ability to detect low levels of a specific substance or impurity in a sample. It indicates the minimum concentration that can be reliably identified without false negatives. A higher sensitivity means that the test can detect smaller amounts of the target substance, which is crucial for ensuring quality and safety in pharmaceuticals and other applications. In essence, sensitivity helps determine the effectiveness and reliability of the limit test in identifying potential contaminants.